The 5 different types of firewalls explained
More than 30 years after the network firewall concept entered the security conversation, technology remains an essential tool in the enterprise network security arsenal. The firewall, a mechanism that filters malicious traffic before it passes the network environment, has proven its worth over decades. However, as with any core technology used for a long time, advances have helped improve both the firewall's capabilities and deployment options. different types of firewalls The firewall dates back to an early era in the modern internet age, when system administrators discovered network environments were compromised by external attackers. It was destined to be some kind of process that looks at network traffic for clear signs of events. Steven Bellovin, then a fellow at AT&T Labs Research and now a professor in the computer science department at Columbia University, is generally credited—if not his own—for first using the term firewall to describe the process of filtering out unw...